Despite its terrifying name, the Ampulux dementor is one of the many species facing threat of extinction due to; destruction of habitat or illegal wildlife trade, according to a report by charity WWF.

Teak Seng, conservation director for WWF said: "The Greater Mekong's unique ecosystems are truly the gift that keeps on giving, providing sanctuary for a treasure trove of species and critical benefits for millions of people across the region.

"As Magical Mekong reveals, the scientists behind these discoveries feel they are racing against the click to document them and strongly advocate for their protection before they disappear."

Scientists also discovered 90 new plants, 23 reptiles, 16 amphibians, nine fish and one pipistrelle bat with long fans during expeditions along the Greater Mekong last year.